everyplace writes: "Professor George Sparling proposes a new unified theory of mathematics, building upon the works of Cartan, Penrose and countless other philosophers and physicists. From the article: "...A fundamental question pondered since the time of Pythagoras, and still vexing scientists today: what is the nature of space and time? After analyzing different perspectives, Sparling offers an alternative idea: space-time may have six dimensions, with the extra two being time-like.""